Sample preparation is a critical step in the overall scheme of an analysis. Traditional methods for the sample preparations, including liquid-liquid extraction (LLE), solvent extraction, distillation and absorption, are time-consuming, tedious, and difficult for automation to some extent. Furthermore, large amounts of high purity organic solvents, which are potentially toxic and expensive, are usually consumed. Therefore, a lot of research efforts in separation science and related fields have been focused o...
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